WO2014190396A1 - Collapsible boat hull hinge arrangement - Google Patents
Collapsible boat hull hinge arrangement Download PDFInfo
- Publication number
- WO2014190396A1 WO2014190396A1 PCT/AU2014/050056 AU2014050056W WO2014190396A1 WO 2014190396 A1 WO2014190396 A1 WO 2014190396A1 AU 2014050056 W AU2014050056 W AU 2014050056W WO 2014190396 A1 WO2014190396 A1 WO 2014190396A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hinge
- hull
- flexible
- panels
- continuous
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B5/00—Hulls characterised by their construction of non-metallic material
- B63B5/24—Hulls characterised by their construction of non-metallic material made predominantly of plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/12—Frameless hulls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B7/00—Collapsible, foldable, inflatable or like vessels
- B63B7/02—Collapsible, foldable, inflatable or like vessels comprising only rigid parts
- B63B7/04—Collapsible, foldable, inflatable or like vessels comprising only rigid parts sectionalised
Definitions
- the present invention relates to a hinge arrangement between panels of a collapsible boat hull.
- the present invention also relates to a collapsible boat hull incorporating such hinge arrangements).
- collapsible boat hulls comprising a pair of hingedly interconnected bottom panels and a pair of side panels hinged to the bottom panels.
- Such boats can be collapsed and folded along the hinging edges of the panels into a substantially flat configuration.
- collapsible boat hulls are also provided with a stern member functioning as a transom, a bow member, and seats which are mounted onto the boat hull when the boat hull is in an erected configuration.
- collapsible boat hulls are provided with rigid stern members, while others are provided with diaphragms that can accommodate rigid panels, which rigidify and stabilise the diaphragm when an outboard motor is mounted thereon.
- collapsible boat hulls of the prior art when arranged in their erected configuration, are generally flexible rather than rigid, leading to poor handling in the water.
- Some collapsible boats have a hull formed of a waterproof (ed) flexible fabric membrane stretched covering a framework to form the hull.
- collapsible boat hulls have some form of foldable hinges between side and bottom panels of the hull to allow what is essentially a one piece hull to erect for use and be folded down for transport and storage. Such hulls avoid the problems associated with having to join panels together in situ and ensure that the seals do not leak in use. Such hulls also avoid the risk of puncture associated with all fabric hull skins.
- hinges need to be sufficiently robust to withstand use when the boat is propelled and used in the water (such as external wave impact and internal weight of users in the boat), and yet be flexible to allow erection and folding down.
- the present invention attempts to overcome at least in part some of the aforementioned disadvantages.
- an aspect of the present invention provides a collapsible boat hull including two bottom panels and two opposed side panels, the bottom panels connected to each other by a first continuous flexible hinge along adjoining longitudinal edges of the bottom panels, and each bottom panel connected to an adjacent side panel by a respective second continuous flexible hinge.
- a collapsible boat hull comprising: a pair of bottom panels, each bottom panel having a first continuous hinge along an inner edge thereof and a second continuous hinge along an outer edge thereof; and a pair of side panels, each side panel being connected to an adjacent bottom panel along a respective second continuous hinge.
- Another aspect of the present invention provides a collapsible boat hull including a pair of bottom panels joined by a flexible first continuous hinge, the flexible hinge permitting the pair of panels to be moved between a collapsed configuration and an erected configuration of the hull and wherein the flexible hinge facilitates or accommodates curving of at least a portion of the panels when the panels are moved to the erected configuration.
- the bottom panels can be moved from a flat folded orientation to a curved erected orientation of the hull, with the flexible hinge(s) retaining its/their integrity.
- a second continuous hinge may be provided along a respective outer edge of each said bottom panel.
- a pair of side panels may be provided, each connected to an adjacent said bottom panel along a respective said second continuous hinge, each said second continuous hinge being f lexible and facilitating curving of at least a portion of the side panels with the bottom panels when the hull is in the erected configuration.
- the bottom and/or side panels may be formed of or incorporate a composite material, such as a polymer or resin impregnated foam board.
- the or each panel may include or be formed of core material (such as a honeycomb material), preferably having an outer polymeric coating/jacket with preferably a polymeric honeycomb (such as a foam) core.
- core material such as a honeycomb material
- a polymeric honeycomb such as a foam
- the coating/jacket may foe a solid or skin of polyester or PVC or the like.
- the panel core include aramid polymer ⁇ s), para-aramid polymerCs), Nomex (RTM), paper impregnated with phenolic resin, or aluminium, or expanded PVC foam.
- the flexible first continuous hinge is desirably continuous along the length of the boat hull and forms a keel hinge at the bottom of the boat.
- the first continuous hinge may form a keel hinge at the bottom of the boat.
- the second hinges may form respective chine hinges at the transition between the side panels and respective bottom panel.
- the first and second continuous hinges may have resilient flexibility along respective longitudinal and transverse planes thereof, thereby facilitating the bottom and side panels to be moved between a folded configuration and an erected configuration.
- the or each aforementioned continuous hinge may also be or include a flexible hinge.
- the first continuous hinge may be or include a flexible first continuous hinge and the second continuous hinge may be or include a flexible second continuous hinge. Therefore, each of the f irst and second continuous hinges may be or include a respective flexible hinge.
- the or each flexible hinge advantageously enables the boat hull to move from a substantially flat configuration to form a conventional boat hull shape when erected.
- the flexible hinge facilitates bending of the pair of panels into the shape of a hull as the panels are moved to the erected configuration.
- this allows the boat hull to move from a substantially flat configuration when folded to form a conventional hull shape when erected.
- the flexible hinge may include a flexible sheet or web forming a hinge line between adjacent connected panels.
- the flexible sheet or web may include a shear resistant material.
- the sheet or web is or includes polyester (woven or continuous sheet), or an advanced composite fibre material, such as Kevlar or glass fibre, or polyester coated glass fibre, or a polymeric material coating or impregnating a flexible sheet material, such as polyester or kevlar.
- the flexible hinge may include a polyester fabric coated with a polymer, such as PVC, rubber, neoprene, rubber and neoprene combinations (e.g. Hypaton (RTM) ⁇ .
- RTM Hypaton
- the flexible hinge may include a support material extending along the hinge adjacent the hinge line.
- the f lexible sheet or web may form the hinge line whilst the support material runs along the longitudinal extent of the hinge and closely adjacent the hinge line.
- the support material of the hinge may be provided by one or more rods of resilient or flexible material, which may be flat in section or round.
- the support material includes o is a glass fibre or polymeric material, such as polyethylene, PVC or polypropylene, or a rubber or silicone based material.
- the flexible hinge advantageously changes shape or flexes along the length of the hull as the panels are moved between the collapsed and erected configurations. That is, the flexible hinge adopts different configuration or geometry at different locations along the length of the hull.
- the flexible hinge adopts a first configuration towards the stern and a second configuration towards the bow when the panels are in the erected configuration
- the flexible hinge flexes substantially along the hinge line as the panels are moved from collapsed to erected configuration to create a shape or configuration that contributes to functional configu ation or geometry of the hull.
- the hinge between the adjacent bottom panels may form an internal ridge along the interior of the bottom of the hull when the boat hull is erected.
- the bottom panels may angle downward from the side panels and meet at the keel hinge.
- the support material may then project upwards towards the interior of the boat hull and the sheet or web material forms the hinge line extending along the hinge.
- This 'W form hinge arrangement provides additional strength and rigidity to the boat hull compared with a flat hinge arrangement.
- the support material may adopt a configuration where the sheet or web material projects substantially downwardly from the interio of the boat hull and the sheet or web material again forms the hinge line extending along the hinge. That is, the support material and hence the hinge forms an external ridge along this portion of the exterior of the bottom of the hul!.
- the hinge preferably thus forms a "v" arrangement which advantageously allows the bow to cut into the water and into waves when the boat is not planing.
- the support material may adopt a configuration where the sheet or web material is substantially flat across and between the pair of panels and across the hinge line.
- the support material is under traction, whieh is an advantageous state for this portion of the boat where there is highest tension stress.
- the hinge may include one or more strengthened running along the hinge.
- each hinge includes a said strengthener either side of the hinge line.
- the stengthener may be in the form of or include or have applied a rib running along the continuous hinge.
- the ri may be provided along the hinge on the interior side of the hull, or along the hinge on the exterior of the hull, o both on the interior and exterior.
- Each rib may be provided as a triangular section elongate member, which may form part of a moulding of the protective material.
- Each rib may be a rod of flexible material, which may preferably be flat or round in cross section.
- the or each rib may be formed of a resilient and/or strong material providing additional strength and stability to the hinge.
- the support material may entrap the sheet or web of material forming the hinge line and linking the adjacent panels.
- the strengthener provides flexion along the length of the protective material As the strengthener has to flex along the length of the hinge to accommodate the change of geometry with the panel flexing to get in the shape of the hull, the support puts the sheet or web material in tension (in between the flange) on most of the length of the hinge.
- the rib may be provided as a ridge (such as triangular section).
- the rib may be applied as a, for example, triangular section elongate strip 20mm wide 10mm high, 90 degrees at the top (rounded), 45 degrees at the base on each side, about 15mm away from the hinge line on each side.
- the chine hinge may have smaller ribs (such as 3mm thick).
- a further aspect of th present invention provides a collapsible boat hull hinge, the hinge including a flexible sheet or web material for connection to adjacent panels of the collapsible boat.
- the sheet or we is of a polyester or other polymeric material, or carbon fibre (e.g. Kevlar) or glass fibre material, or material with reinforcing properties equivalent to glass fibre or Kevlar, held between supporting material along either side of the hinge line, and preferably on one or both sides of the hinge (i.e. external or internal of the hull).
- the supporting material may include PVC or other polymer that allows flexibility in the hinge for function but provides support and structural integrity to the hinge.
- the sheet or web may therefore provide a reinforcing function for the hinge, which can help with flexural strength and resist frictional or impact damage.
- An alternative sheet or web may be provided by fibre reinforced plastic resin and/or polyester coated fabric.
- the fabric core may be a woven Kevlar.
- the poiyester coated fabric may also be used as a membran at the stern of the boat e.g. for waterproofing adjacent a face of the transom.
- the hinge flexes or changes shape substantially along the length of the hull as the boat is erected to form the conventional hull shape.
- the f lexible sheet or web may be bonded into the support materials, and the support materials may be bonded to the respective panels either side of the hinge line.
- the support material may include or be fibreglass or polypropylene or other polymeric material, such as a PVC.
- the hinge may be formed with the flexible material bonded into the support materials for later bonding between the edges of the panels of the hull.
- the support material may be friction bonded to the hinges and/or panels. Such friction bonding has been founded suitable for certain applications, such as rescue boat configurations of the present invention.
- At least one of the said panels (bottom and/or side panel(s)) of the hull may include or be formed of a core of material (preferably having a honeycomb structure) coated or impregnated with a polymer.
- the (honeycomb) core may be or include PVC or polypropylene material.
- the polymer coating or impregnation material may be or include a resin, such as epoxy, or polymer such as polyester.
- a further aspect of the present invention provides a flexible hinge for a collapsible boat hull having at least two panels to be hinged by the flexible hinge for erecting and collapsing the boat hull, the flexible hinge including a flexible material forming a hinge line along the flexible hinge, and support material either side of the hinge line, the support material providing structural support.
- the flexible hinge may include a f lexible protective material extending over or through the flexible material of the hinge line.
- the support material of the flexible hinge is preferably made with or includes fibres orientated along the hinge and/or having the stiffening ribs aligned along the hinge such that the hinge predominantly flexes along the line of the hinge and has restricted flexure across the hinge (and so avoids the typical undulation/bulging experienced in isotropic material without
- the flexible hinge may include at least one strengthener orientated extending along a length of the flexible hinge. At least one said strengthener may be positioned adjacent the hinge line, preferably external of the hull.
- the flexible hinge may have fibres integral to th hinge orientated along the hinge,
- Figure 1 shows a boat hull erected but with the transom and bow members to be installed, according to an embodiment of the present invention.
- Figure 2 shows a boat hull erected with the transom and bow members being installed, according to an embodiment of the present invention
- Figure 3 shows a cross section through a collapsible boat hull showing hinges according to hinge arrangement according to an embodiment of the present invention.
- Chine hinge marked 'A' is shown in more detail in Figure 4
- central (keel) hinge marked 'B' is shown in figure 5.
- Figures 4 and 5 shows detail of various hinges according to an embodiment of the present invention.
- Figure 6 shows the boat hull folded to a transport/storage configuration and incorporating the hinge according to an embodiment of the present invention.
- Figures 7 and 8 show alternative embodiments of a hinge of the present invention incorporating support ribs
- Figure 9 shows a side view of a collapsible boat hull in an erected configuration, itlustrating portions of flexible hull which exhibit varying shape when the hull is erected according to an embodiment of the present invention
- Figure 10 shows cross sections through a collapsible boat hull showing flexible hinge at ⁇ ', ' ⁇ ' and ⁇ ' of Figure 9;
- Figure 11 shows an underside of the collapsible boat hull in the erected configuration and illustrating location of f A', 'B' and 'C of Figure 9.
- Figures 1 and 2 show an erected collapsible boat hull 10.
- the hull has two bottom panels 12,14 connected along their inside edges by a central flexible hinge 16.
- Two side panels 18,20 are connected to respective outside edges of the bottom panels by chine hinges 22,24,
- Figure 1 shows the hull 10 without a removable transom or bow member installed.
- Figure 2 shows the bow member 26 installed and th transom member 28 in partially installed.
- Figure 3 shows a vertical cross section across the beam of the boat hull.
- the structure of the central hinge and chine hinges is shown in more detail identified as sections labelled A and B, which are shown in close up in figures 4 and 5.
- Each hinge includes a flexible hinge line material 30, such as a web or sheet of resilient material e.g. a Kevlar or glass fibre matenal.
- the chine hinge 17,19 is provided between the side panel 18,20 and a bottom panel 12,14.
- Each panel terminates at a respective bevelled edge 32,34.
- the f lexible sheet or web material 30 forms the hinge line, which is supported on either side by a support material 36.38.
- the support material preferably covers and protects the flexible hinge material apart from at the hinge line, or is sufficiently thin at the hinge line as to not prevent flexure of the hinge material during opening and closing of the hull.
- the support material connects the flexible hinge material to the respective side panels.
- the support material advantageously protects from impact the hinge material by providing the two opposed extensions ('flanges' ⁇ of support material substantially cover the hinge material and only leave a small amount of the hinge material exposed or have a thin covering of support material or other material as a protection without functionally impairing the operation of the hinge.
- bevelled panel edges help to create a smooth, flush hinge-line when the boat hull is fully erected, as show in figure 4.
- FIG. 5 shows detail of the central ⁇ keel line) hinge.
- the support material forms a ridge 40 projecting into the interior of the boat hull i.e. the hinge is generally 'W shaped in cross section. This adds strength in relation to carrying weight in the boat and reduces stress and external (water side) exposure on the flexible hinge material compared with a flat hinge.
- Construction of the hinge is generally the same as the chine hinges, with the bottom panels edges 42,44 bevelled.
- the resultant external channel 46 formed by the exterior Valley' of the ridge helps stability of the boat at speed.
- the hinge is bonded to the respective panels.
- the support material may support the flexible hinge material and the support material is bonded to the panel(s), such as by a marine grade adhesive.
- FIG. 6 shows the boat hull 10 in collapsed configuration ready for transport or storage.
- the side panels 18,20 are folded in between the bottom panels 12,14.
- the central (keel line) hinge 16 at one edge of the collapsed hull and the two chine hinges are at the opposite end.
- the side panels include gunwale edges 48,50.
- Figures 7 and 8 show strengthened in the form of additional ribs 52,54 integrated with the protective material of each hinge.
- the ribs are shown on the external (water) side of the hull, but may be provided on the interior side of the hull, or on both interior and exterior sides.
- the ribs may be rods or other elongate members.
- the ribs are shown in the figures as triangular sections, but it will be understood that other cross sectional shapes are envisaged to fall within the scope of the present invention. For example, curved or half round, half hexagonal, trapezium etc.
- the ribs provide strength to the hinge whilst allowing flexure in the longitudinal direction of the hinge.
- Figures 9 and 1 1 show an erected collapsible boat hull 110.
- the hull has two bottom panels 1 12, 1 14 connected along their inside edges by a central flexible hinge 1 6.
- Two side panels 1 18a, 1 1:8b are connected to respective outside edges of the bottom panels by suitable hinges such as chine hinges.
- Figure 10 shows a series of vertical cross sections across the beam of the boat hull 110 and demonstrates structure of the central hinge 1 6 at various locations along the length of the hull 1 10 when the panels 112, 1 14 are in an erected configuration, forming a typical boat hull arrangement,
- Figure 10 shows central hinge structure at locations marked ⁇ ', 'B' and on Figures 9 and 1 1 , corresponding to: a section adjacent an outer end of the bow; a section at the bow; and a section towards the stern of the boat hull 110 respectively.
- the hinge 116 includes a flexible hinge line material 120, such as a web or sheet of or including a flexible yet resilient material e.g. a Kevlar or glass fibre material.
- the hinge 1 16 also includes a support material extending along the hinge adjacent the hinge line.
- the flexible hinge line material 120 forms the hinge line 121 whilst the support material 130 runs along the longitudinal extent of the hinge and closely adjacent the hinge line 121 .
- the support material 130 is or includes a glass fibre material or polymeric material, in the embodiment shown in Figures 9 to 11 , the flexible sheet or web is integrated or embedded with the support material 130.
- Sub-figures 10A to 10C shows detail of the central (keel line ⁇ hinge when the collapsible boat is in an erected configuration and the support material 130 is therefore flexed.
- the support material when flexed (130b) forms a generally flat formation at the end of the bow, spanning between the pair of bottom panels 1 12,1 14.
- the support material 130 is under traction.
- This is an area of the hinge 1 16 that is under high tension stress relative to other areas of the hinge and so a flat configuration is ideal for structural purposes.
- Significant departure from the flat configuration at this region of the hinge 116 could create a shar fold line and potentially damage the web or sheet of the hinge line material 120.
- Sub-figure tOB shows detail of the central hinge adjacent the bow area of the huil.
- the support material 130b when flexed, as a result of the panels 1 12, 1 14 being moved to the erected configuration, forms a ridge 12 projecting away from an interior of the boat hull. That is, the hinge is generally 'V shaped, providing an ideal shape to cut into and deflect water before the boat commences planing, or to minimise resistance to movement of the boat when the boat encounters waves.
- the angle of the ! V" can vary along the length of the hull.
- the 'V shape is formed by application of compression to the support material as the panels 12,1 14 are moved into the erected hull formation.
- the dotted lines in Sub-figure 10B represent the support material 130a when in a substantially un- f lexed state,
- the support material 130 forms a ridge 140 when flexed, projecting into the interior of the boat hull i.e. the hinge is generally W shaped in cross section. This adds strength in relation to carrying weight in the boat and reduces stress and external (water side) exposure on the flexible hinge material compared with a flat hinge.
- Each of the bottom panels has bevelled edges and the flexible sheet or web material forms the hinge line therebetween.
- Th resultant external channel 46 formed by the exterior Valley' of the ridge along the portion of the keel hinge towards the stern helps stabilit of the boat at speed.
- the hinge 1 16 is bonded to the respective panels 1 12,1 14.
- the support material 130 can support the flexible hinge material 120 and the support material 30 is bonded to the panel(s), such as by a marine grade adhesive.
- the support material 130 is bonded to the respective panels 1 12,1 14 such that it is arranged at an angle of between 10° and 45° when the panels 1 1.2,1 14 are in the collapsed or folded configuration.
- the hinge Whilst the hinge is flexible, it also has rigidity which assists in creating a smooth transition between change of geometry of the hinge 116 along the length of the hull. That is, there is a smooth transition from the W or inverted 'V : shape at the stern, to the 'V shape at the bow and the substantially flat geometry towards the end of the bow.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Tents Or Canopies (AREA)
- Toys (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/894,600 US20160101828A1 (en) | 2013-05-31 | 2014-05-30 | Collapsible Boat Hull Hinge Arrangement |
CA2950446A CA2950446A1 (en) | 2013-05-31 | 2014-05-30 | Collapsible boat hull hinge arrangement |
AU2014273852A AU2014273852A1 (en) | 2013-05-31 | 2014-05-30 | Collapsible boat hull hinge arrangement |
AU2018205133A AU2018205133A1 (en) | 2013-05-31 | 2018-07-11 | Collapsible boat hull hinge arrangement |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2013901967 | 2013-05-31 | ||
AU2013901967A AU2013901967A0 (en) | 2013-05-31 | Collapsible boat hull hinge arrangement | |
AU2013902114 | 2013-06-11 | ||
AU2013902114A AU2013902114A0 (en) | 2013-06-11 | Collapsible boat hull hinge arrangement |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014190396A1 true WO2014190396A1 (en) | 2014-12-04 |
Family
ID=51987786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2014/050056 WO2014190396A1 (en) | 2013-05-31 | 2014-05-30 | Collapsible boat hull hinge arrangement |
Country Status (4)
Country | Link |
---|---|
US (1) | US20160101828A1 (en) |
AU (2) | AU2014273852A1 (en) |
CA (1) | CA2950446A1 (en) |
WO (1) | WO2014190396A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112937756A (en) * | 2021-03-14 | 2021-06-11 | 哈尔滨工程大学 | Air cushion support deformation boat body |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2353013A (en) * | 1940-04-23 | 1944-07-04 | Paul F Schumacher | Folding and nonfolding marine craft |
GB2013586A (en) * | 1978-02-03 | 1979-08-15 | Lennard G A F | Improvements in or relating to folding boats |
US7721671B2 (en) * | 2005-08-11 | 2010-05-25 | Quickboats Pty Ltd. | Bracing for collapsible boat |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4282616A (en) * | 1979-05-23 | 1981-08-11 | Ronald Battershill | Rigid collapsible boat |
-
2014
- 2014-05-30 AU AU2014273852A patent/AU2014273852A1/en not_active Abandoned
- 2014-05-30 US US14/894,600 patent/US20160101828A1/en not_active Abandoned
- 2014-05-30 WO PCT/AU2014/050056 patent/WO2014190396A1/en active Application Filing
- 2014-05-30 CA CA2950446A patent/CA2950446A1/en not_active Abandoned
-
2018
- 2018-07-11 AU AU2018205133A patent/AU2018205133A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2353013A (en) * | 1940-04-23 | 1944-07-04 | Paul F Schumacher | Folding and nonfolding marine craft |
GB2013586A (en) * | 1978-02-03 | 1979-08-15 | Lennard G A F | Improvements in or relating to folding boats |
US7721671B2 (en) * | 2005-08-11 | 2010-05-25 | Quickboats Pty Ltd. | Bracing for collapsible boat |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112937756A (en) * | 2021-03-14 | 2021-06-11 | 哈尔滨工程大学 | Air cushion support deformation boat body |
CN112937756B (en) * | 2021-03-14 | 2022-06-21 | 哈尔滨工程大学 | Air cushion support deformation boat body |
Also Published As
Publication number | Publication date |
---|---|
AU2018205133A1 (en) | 2018-07-26 |
CA2950446A1 (en) | 2014-12-04 |
US20160101828A1 (en) | 2016-04-14 |
AU2014273852A1 (en) | 2016-01-28 |
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